void comprimir_transformada(char *input,char *output);
void MDCT (double *amostras_saida, unsigned short int *amostras_entrada, int num_amostras, char *output);
void IMDCT (int *amostras_saida, FILE *foutput, int num_amostras, FILE *output);
void DCT (double *amostras_saida, unsigned short int *amostras_entrada, int num_amostras, char *output);
void IDCT (double *amostras_entrada, int num_amostras);
void codificacao_transformada(char *input, char *output);
